Decatur, IL
Local storm history & FEMA National Risk Index data
Decatur is rated Relatively Moderate for overall natural hazard risk — near the middle compared to other US counties — based on FEMA's National Risk Index for Macon County, IL. The county's highest-rated hazards are cold wave, heat wave, and earthquake.
Storm events near Decatur
NOAA-recorded tornado, hail, and flood events within 25 miles of Decatur's center, 2016–2026 — the only hazards NOAA reports with exact coordinates, so these counts are specific to Decatur itself, not the whole county.
County-wide hazard risk
Every other hazard FEMA and NOAA track — including drought — is only scored at the county level. These are Macon County's FEMA National Risk Index scores, covering Decatur along with the rest of the county, not a Decatur-specific figure.
| Hazard | NRI score | Rating |
|---|---|---|
| Wildfire | 21.2 | Very Low |
| Inland Flooding | 83.3 | Relatively Moderate |
| Coastal Flooding | — | Not Applicable |
| Earthquake | 89.9 | Relatively Low |
| Heat Wave | 90.3 | Relatively Moderate |
| Tornado | 86.1 | Relatively Moderate |
| Avalanche | — | Not Applicable |
| Cold Wave | 91.5 | Relatively High |
| Drought | 87.5 | Relatively Moderate |
| Hail | 84.8 | Relatively Moderate |
| Hurricane | 37.1 | Very Low |
| Ice Storm | 66.1 | Relatively Moderate |
| Landslide | 52.3 | Very Low |
| Lightning | 75.7 | Relatively Moderate |
| Strong Wind | 89.1 | Relatively High |
| Tsunami | — | Not Applicable |
| Volcanic Activity | — | Not Applicable |
| Winter Weather | 78.1 | Relatively Moderate |
Source: FEMA National Risk Index v1.20.0, December 2025. See the methodology page for definitions, or the full Macon County risk profile for disaster declarations, social vulnerability, and climate projection data.
More on Macon County:
Frequently asked questions
What natural hazards is Decatur, IL at risk of?
Decatur is rated Relatively Moderate for overall natural hazard risk by FEMA's National Risk Index — near the middle compared to other US counties. The highest-rated hazards for Macon County, where Decatur is located, are cold wave, heat wave, and earthquake.
What is Decatur's biggest natural hazard risk?
Cold Wave is the highest-rated hazard for Macon County, where Decatur is located, scoring 91.5 out of 100 on FEMA's National Risk Index (rated "Relatively High").
Is Decatur a high-risk area for natural disasters?
Somewhat — Decatur carries near the middle compared to other US counties for overall natural hazard risk, per FEMA's National Risk Index rating of "Relatively Moderate" for Macon County.
Has Decatur had tornadoes, hail, or flooding?
NOAA has recorded 51 tornado, 112 hail, 42 inland flooding events within 25 miles of Decatur since 2016.